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PSA - Railroad Improvements Olive St. Reconstruction, Phase II Proj No. 114-064 – Norfolk Southern Railway Co.
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PSA - Railroad Improvements Olive St. Reconstruction, Phase II Proj No. 114-064 – Norfolk Southern Railway Co.
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11/23/2021 4:18:54 PM
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Board of Public Works
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Contracts
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11/23/2021
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Norfolk Southern Railway Company <br />Norfolk Southern - Special Provisions for Protection of Railway Interests <br />July 23, 2018, Updated March 11, 2021 <br />Appendix <br />E-5 <br /> <br /> <br /> <br /> <br />2. The ballast protection is to extend 25’ beyond the proposed limit of work, be installed at <br />the start of the project and be continuously maintained to prevent all contaminants <br />from entering the ballast section of all tracks for the entire duration of the project. <br />C. Excavation: <br /> <br />1. The subgrade of an operated track shall be maintained with edge of berm at least 10’-0” <br />from centerline of track and not more than 24-inches below top of rail. Contractor will <br />not be required to make existing section meet this specification if substandard, <br />in which case existing section will be maintained. <br /> <br />2. Additionally, the Railroad will require the installation of an OSHA approved handrail and <br />orange construction safety fencing for all excavations of the Railroad right-of-way. <br /> <br />D. Excavation for Structures and Shoring Protection: <br /> <br />1. The Contractor will be required to take special precaution and care in connection <br />with excavating and shoring pits, and in driving piles or sheeting for footings adjacent <br />to tracks to provide adequate lateral support for the tracks and the loads which <br />they carry, without disturbance of track alignment and surface, and to avoid <br />obstructing track clearances with working equipment, tools or other material. <br /> <br />2. All plans and calculations for shoring shall be prepared, signed, and sealed by a <br />Registered Professional Engineer licensed in the state of the proposed project, in <br />accordance with Norfolk Southern’s Overhead Grade Separation Design Criteria, <br />subsection H.1.6.E-Construction Excavation (Refer to Norfolk Southern Public Projects <br />Manual Appendix H). The Registered Professional Engineer will be responsible for the <br />accuracy for all controlling dimensions as well as the selection of soil design values <br />which will accurately reflect the actual field conditions. <br /> <br />3. The Contractor shall provide a detailed installation and removal plan of the shoring <br />components. Any component that will be installed via the use of a crane or any other <br />lifting device shall be subject to the guidelines outlined in section 5.G of these <br />provisions. <br /> <br />4. The Contractor shall be required to survey the track(s) and Railroad embankment and <br />provide a cross section of the proposed excavation in relation to the tracks. <br /> <br />5. Calculations for the proposed shoring should include deflection calculations. The <br />maximum deflection for excavations within 18’-0” of the centerline of the nearest track <br />shall be 3/8”. For all other cases, the max deflection shall not exceed ½”. <br /> <br />6. Additionally, the Railroad will require the installation of an OSHA approved handrail and <br />orange construction safety fencing for all excavations of the Railroad right-of-way. <br /> <br />7. The front face of shoring located to the closest NS track for all shoring set-ups located <br />in Zone 2 as shown on NS Typical Drawing No. 4 – Shoring Requirements (Appendix I) <br />shall remain in place and be cut off 2’-0” below the final ground elevation. The <br />remaining shoring in Zone 2 and all shoring in Zone 1 may be removed and all voids <br />must be backfilled with flowable fill. <br />EXHIBIT C
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